Improved method of operating the cutters of harvesting-machines



.I. HAVILAND.

Mowing Machine.

Patented Sept. 1, 1857.

UNITED STATES PATENT OFFICE.

JAMES HAVILAND, OF MILTON, NEW YORK.

IMPROVED METHOD OF OPERATING THE CUTTERS 0F. HARVESTING-MACHINES.

Specification forming part of Letters Patent No. 18,093, dated September 1, 1857.

To all whom it may concern:

Be it known that I, JAMES HAVILAND, of Milton, in the county of Ulster and State of New York,have -invented a new and Improved Method of Operating the Cutter-Blade of Harvesting-Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification Figure 1 being a top view of my improved harvestingmachine, and Fig. 2 a side view of the same with a portion of the frame broken away to show the arrangement of the gearing.

Similar letters indicate the same parts in both drawings.

The frame of my improved tharvesting-machine may be constructed in any manner that will best adapt it to the movements of the machine. The pitmanfconnects the inner end of the cutter-blade O with the eccentric wheel D on the vertical shaft B, or with a crank on said shaft, should such device he preferred. The vertical shaft B'is sustained in suitable bearings. Motion is imparted to the vertical shaft B, and consequently to the cutter-blade O, by means of a spiral groove formed in the periphery of the said shaft, and a series ofround teeth, 6 e, on the face of the main bearing-wheel A, Whose extremities are of such an oval shape as adapts them to work in the said spiral groove. I find it expedient to place the teeth 6 e at such a distance from each other that two or three of said teeth will simultaneously operate within the groove in the shaft B. This arrangement imparts a perfectly steady motion to the shaft B, and the spiral groove in said shaft may be given such a pitch that the teeth 0 e will impart any desired velocity to the cutter-blade, which is combined with the said shaft B.

The simplicity ofthis my improved arrangement for communicating motion to the cutterblade of harvesting-machines must be readily apparent to any one who is familiar with the subject.

What I claim as my invention, and desire to secure by Letters Patent, is

. Imparting the requisite movements to the cutter-blade of a harvesting-machine by means ofthe spirally grooved intermediate shaft, B, and the series of hemispherical or oval-headed teeth 6 e, projecting from the face of the main bearing-wheel A and operating upon the said intermediate shaft, substantially as herein set forth.

The above specification of my. new and improved method of operating the cutter-blade of harvesting-machines signed and witnessed this 1st day of August, 1857.

'JAMES HAVILAND. Witnesses:

GEORGE W. ADAMS, Z. O. ROBBINS. 

